Ok, I've had another go over the textures taking your advice into account, the gravel now uses a displacement map, the rail has been dirtied up a bit, and I've added another ambient occlusion pass to the sleepers. I've also finished the fixings that attach the rails to the sleepers and stuck them in. Any thoughts? :)…
Here you go. Compressed to .jpeg to save some Dropbox space. Again, C&C are very welcome! EDIT: I should mention; as of yet I've only used greyscale specular/gloss maps, because I don't know any of the theory behind a colour specular map, such as what colours different surfaces should be, and more importantly why. I'll get…